Paper-feeding machine



(No. Model.) 'SheQtS-Shet 1.

TF; VAN BENTHUYSEN.

PAPER ]E'E`r"DI1\lH% MACHINE.

No. 555,422. patented Feb, 25, 1896,l

ATToRNEm 7 sheets-sheet? 2l (No Model.) I

AF. VAN BENTHUYSBN.

. i PAPER FEEDING MACHINE. l N0. 555,422. Patented Feb. 25, 1896. Y n@Wn-Nassns: mvsm'on:

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(No Model.) 7 Sheetsf-Sheet 3.

F. VAN BENTHUYSEN.

PAPER FBBDING MACHINE.

lNvENToR'.

FRANK VAN BEN-VH uYsEN.

BY Wm...) MQ@ ATTORNEY.

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WITNE 55552 Nnlicw B GRAMM. PNDTO-LITHQWASMNGYON D C (No Model.) 7sheen-sheet 4.

P. VANBBNTHUYSEN. rAPBR PEEDING MACHINE.

WITNEssEs': INvENToR:

y da@ ifi FRANKVAN BENTHUYSEN,

ATTORNEY.

m0' Model.) 5 '1 sheetssheet 5.

F. VANBENTHUYSEN. PAPER PEEDING MACHINE.

N0. 555,422. Patented Feb. 25, 1,896.

si? T 977 y) n WITm-.ssas [Nvt-.moar

l FRANK VAN BENTHuYsEm, ifi Qkmmw f BY Y ATTORNEY.

NURlW EGRMIAM. PHOTO-UNO. WASMNGTOILDC .No Model.) 7 sheets-sheet s.

' :F.'VAN BENTHUYSBN.

l PAPER FEBDING MACHINE. i

No. 555,422. Patented Peb. 25, 1896.

A INVENTOR:

FRANK VAN BENTHUYSEN 'Q WITN isses: BY

Q "i y AT1-o n N EY.

AN DREW BLRAHAM. PHUTQLITHQWASHINGTON. D C

1:'. VAN BENTHUYSEN.

F RAN KVAN BENT" uYs EN, BY WMM@ m L@ ./Ujlrng.

O-UTHQNMSMI NGTON. n C

ANDREW B GRAHAM PROT with guides on such machines.

UNITED STATES PATENT EEICE.

v FRANK VAN BENTHUYSEN, OF ALBANY, NEV YORK.

PAPER-FEEDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 555,422, dated February25, 1896.

Application filed July 3 l, 1 8 91.

To all whom t may concern:

Be it known that I, FRANK VAN BENTH UY- sEN, of the city and county ofAlbany, in the State of New York, have invented new and usefulImprovements in Electrically Controlled Paper-Feeding Mechanism forPrinting-Presses, Folding -Machines, and other Similar Machinery, ofwhich the following is a specification.

My invention consists of an automatic mechanism for conveying sheets ofpaper or other materialfrom a feeding-table into a printing-press orother machine into contact The objects of myinvention are to effect thefeeding of sheets, one at a time, against one or more guides of themachine; to provide means for automatically stopping the motion of themachine When a sheet is not brought into contact with said -guides orguide in proper form or at a required time, thereby avoiding theprinting of the sheet without proper registry, and also to effect anautomatic stoppage of the machine whenever a supply of the sheets isexhausted or when said sheets are improperly fed to the machine.

In the accompanying drawings, which are herein referred to an d formpart of this speciiication, Figure 1 is aplan view of my paperfeedingmechanism as applied to a stop-cylinder printing-press, only a smallportion of the latter being shown. Fig. 2 is a side elevation of thesame. Fig. 3 is an end elevation of a part of my feeding mechanism,showing parts of the printing-press. Fig. 4t is a longitudinal sectionat the line X X on Fig. l of my feeding mechanism, the parts of theprinting-press being omitted. Fig. 5 is an enlarged vertical section ofpart of my feeding mechanism, showing a rock-shaft of the printing-pressprovided with an electricallycontrolled guide for the advancing end of asheet of paper, the spring of said guide being in its normal position.Fig.l 6 is a detached side elevation of said guide with its springdeflected. Figs. 7 and 8 are detached views of operating mechanism for avacuum-pipe for moving sheets of paper laterally. Figs. 9 and l0 arerespectively an enlarged vertical section of said vacuum-pipe and a sideelevation of same, both ofV said views showing anelectrically-contrclled side guide for the Serial No. 401,257. (Nomodel.)

sheets of paper. Fig. ll is an enlarged side elevation of a pair ofgear-wheels that form part of the tape-drivin g mechanism, the sameshowing an automatic clutch by which the driven wheel of said pair isautomatically secured to its shaft. Fig. l2 is a skeleton plan view ofthe electrical circuits for controlling the several parts of my feedingmechanism. Fig. 13 is an enlarged side elevation of apair ofelectromagnets and its movable armature employed in said electricalcircuits in the manner hereinafter described. Fig. 14 is a sideelevation of a portion of a stop-cylinder printing-press provided withmy invention, and Fig. l5 is atransverse section of Fig. 14 at the lineY Y with certain parts omitted therefrom.

As represented in the drawings, A designates the frame of aprinting-press of ordinary construction; B, the cylinder of saidprinting-prc-iss; C, the longitudinal cam-shaft of the same, and D therock-shaft which carries the paper-guides for the inner end of thesheets of paper. 'Only portions of said parts are shown; but all are oflan old and wellknown construction, which form no part of my inventionbeyond their adaptation to my purpose.

E designates the framework for my paperfeeding mechanism, the same beingcomposed of longitudinal frame-pieces l, which are secured together bytie-bolts 2 or other suitable means. Said framework may be attached tothe frame A in such manner that it will rest upon that part of thelatter that is commonly used for supporting the feed-board of the press.A shaft 3 is journaled in the framework E and is provided with a pulleyl, to which motion is imparted by a belt 5, that moves in the directionindicated by an arrow in Fig. l. Said belt may receive its motion fromany suitable motor. At or near each end of the shaft 3 a gear-wheel 6 isloosely fixed on said shaft, and, in positions that correspond to thelocation of said gear-wheels, electrically-controlled friction-clutches7 are secured to said shaft, one of said clutches being assigned to eachof said gear-wheels and fitted to engage therewith, so as to temporarilysecure said gear-wheels to the shaft Said friction-clutches are soarranged that either one can be operated independently of the other,thereby allowing either one or both IOO of the gear-wheels to rotatewith said shaft, or both of the gear-wheels may be freed from the shaft3, so that the latter can be rotated without imparting motion to saidshaft.

The electrically-controlled friction-clutch 7 forms no part of thisinvention, the same being fully shown and described in Letters Patent ofthe United States No. 457,446, granted to me August 11, 1891.

At opposite ends of the shaft 3, between the gear-wheels G and theoutermost frame-pieces l, there is a pinion 8 permanently secured tosaid shaft for a purposehereinafter explained.

Two separate tape-driving shafts 9 and 10 are journaled in the frameworkE so as to range in line with each other, the center line of said shaftsbeingparallel to that of the shaft 3, and t-o the outer end of each ofsaid shafts a pinion 11 is secured. Said pinions are fitted to mesh intothe gear-wheel G at the corresponding side of the machine for thepurpose of imparting a maximum rate of speed to the shafts 9 and 10,but, it being understood that the gear-wheels 6 are only intermittentlyconnected to the shaft 3, said speed is not uniformly maintained in bothof said shafts, the speed of either of them being liable to be variedfor a purpose hereinafter described. Gear-wheels 12 and 13 are looselyfitted on the shafts 9 and 10 between the pinions 11 and thecorresponding framepieee 1, and said gear-wheels are fitted to mesh intothe pinions S on the shaft 3 for the purpose of imparting a minimum rateof speed to either of the shafts 9 and l() when occasion requires it.

The gear-wheels 12 and 13 are loosely iit ted on their respectiveshafts, so as to allow the latter to rotate freely in the eyes of saidwheels while the shafts 9 and 10 are being rotated by means of thegear-wheels 6 and pinions 1l, and for the purpose of permitting saidshafts or either of them to revolve independently of the gear-wheels 12and 13 both of the latter are provided with a series of openings 11 intheir hubs, as shown in Fig. 11, said openings being formed withinclined sides at their outer sides, and in each opening is looselyplaced a roller 15, which, while the shaft to which it pertains is beingrotated at a greater number of revolutions than the correspondinggear-wheel, will be carried to the larger part of the opening andthereby leave the gear-wheel free from any positive connection with saidshaft; but when the conditions are reversed, so that the gearwheel isrotated a greater number of revolutions than the shaft to which itpertains, said rollers will be carried into the smaller part of theopenings 1i, and thereby the gear-wheel will be automatically clutchedto the shaft whereon it is placed. Each of the shafts D and 10 isprovided with a series of tape-pulleys 1G for driving two independentsets of endless tapes, the tapes of one set being designated as 17 andthose of the other set being designated as 1S. The tapes 17 pass aroundthe pulleys of an independent shaft 19 and the tapes 18 pass around thepulleys of another independent shaft 20. The center lines of the shafts19 and 2O range in exact line with each other and are parallel to theshafts 9 and 10.

F designates the paper-feeding drums by which the sheets of paper arefed into my feeding mechanism. This preliminary feeding of the sheets tosaid drums maybe effected a sheet at a time either by hand or by anyautomatic mechanism that is suited to the purpose, and in feeding saidsheets to the feeding-drums it is not necessary that they should beentered therein with absolute accuracy, for the reason that my feedingmechanism will automatically carry the sheets into their required placeand position, as hereinafter explained. The feeding-drums F are securedto a continuous shaft 21, which. is journaled in the framework E and isprovided with a pulley 22, to which a belt 23 imparts motion derivedfrom. a pulley 2i, which may be secured to the shaft 9, as shown in Fig.1, or to the shaft 10, when preferable; but it is obvious that saiddrumshaft may be driven by a pulley on a shaft that is disconnected frommy feeding mechanism.

G designates a shaft that is loosely journaled in jaws 25 directly overthe feedingdrums F. Said shaft is provided with collars or disks 2G,which are adj ustabl y secured thereto, so as to be fixed at anyposition where they may be required on said shaft, and said collars havea frictional contact with the feedingdrums F, so that they will bearupon. each sheet of paper and by pressing the sheet upon thefeeding-drums aid in. the preliminary feeding of the sheets into thefeeding mechanism.

II designates a transverse shaft that is joui," naled in the frameworkE, and is provided with a series of pulleys 27, by which a series ofauxiliary feeding-tapes 28 are driven. Said shaft derives its motionthrough a belt 29 from a pulley on the shaft 3. A stationary shaft orrod 30, that is held by the framework E, is provided with a series ofadjustable arms 31, each of which has a pulley 82 pivotcd to its innerend for carrying the corresponding bight of the auxiliary feeding-tapes2S to a point beyond the guides (hereinafter described) for the foremostedge of the sheets of paper, and said auxiliary feeding-tapes areadapted by reason of their bearing upon the sheets of paper at thatpoint to prevent the foremost edge of the sheets of paper from beingcurled up by contact with said guides. The rod 30 alsohas securedthereto two arms 33, each having a metallic contact-arm Ill, looselypivotcd thereto for a purpose l1ereinafter explained. The number of theendless tapes 28 and their positions should correspoml to those of theendless tapes '17 and 18. A

stationary blast-pipe 35 is fixed transversely over the inner portionofthe endless tapes 17 and 1S, and has one of its ends closed, the

IIO

opposite end being open and connected by a flexible tube 36 to anair-forcing pump or fan. (Not shown in the drawings.) The lower side ofthe pipe 35 has a series of openings 37 formed therein so as todischarge the air therefrom directly downward upon a sheet of paperlying on the upper portion of the endless tapes 17 and 18, and therebythe frictional contact of the paper with said tapes will be augmented.

I designates a transverse sliding1 pipe located adjacently to the innerbight of the endless tapes 17 and 18, and so that its upper side willlie on the same plane with the upper line of said tapes. @ne end of saidpipe is closed and is provided with a valve 38, that is electricallycontrolled, as hereinafter eX- plained. The opposite end of the pipe Iis connected by a flexible tube 39 to an air-eX- hausting pump or fan(not shown in the drawings,) for the purpose of producing a vacuum insaid pipe when all of its apertures are closed, and the upper side ofthe pipe I is provided with a series of openings 40, for the purpose ofaifording means, when said openings are covered by a sheet of paper thatis being fed through by the tapes 17 and 18, of attaching the sheet tosaid pipe by atmospheric pressure during the operation of moving saidsheet toward the side guide of the apparatus. A pendent lug 41 isattached to the pipe I, and a connecting-rod 42 connects said lug to theupper end of a lever 43, that is pivoted, as at 44, to a bracket 45,projecting from the side of vthe framework A. The lower portion of thelever 43 engages with a cam 46 secured to the cam-shaft O, said cambeing fitted to produce the required oscillations of said lever toeffect the reciprocations of the pipe I for moving an attached sheet ofpaper against the side guide of the apparatus.

An inclined table .I is attached to the framework E, so as to extendfrom side to side of the apparatus slightly in advance of pipe I andover the cylinderB of the printing-press, said table having aninclination that corresponds to that of the lower stretch of the endlessfeeding-tapes 28, which sweep closely to the top of said table. In theupper face of the latter, at each end and extending nearly to the middleof said table, metallic strips 47, which should be good conductors of velectricity, are inserted to receive contact from the arms 34. Theauxilliary feeding-tapes 28 are arranged to coact with the surface ofthe table .I for the purpose of completing the feeding of the sheets ofpaper to the nippers of theimpression-cylinder B, after said sheet-shave passed off from the feeding-tapes 17 and 18. Adjustable lingers 48project from the inner edge of the table J for the purpose ofaffordingsupport for heads 49 for the paperguides located directly overthe cylinder B. Each of said heads, which are made of wood or othermaterial that is a proper non-conductor of electricity, is provided witha deli-A cate pendent spring 50 made of metal having suitableconductivity for electricity, said spring being capable of beingdeflected by the pressure of a sheet of paper when the latter is pushededgewise against its face. Each of the heads 49 is provided with acontact-point 51, against which the spring 50 will bear when said springis deflected, as shown in Fig. 6, and each of said heads is alsoprovided with a stop 52 to prevent the said spring from springingoutwardly beyond its normal position. The heads 49 are attached to theouter end of slides 53, which are adjustably secured to arms 54, thelatter being adjustably attached to the rock-shaft D, and the latter isoscillated in the usual and well-known manner by means of a rod 55,which bears upon .a cam 56 secured to the shaft C. The rock-shaft D isarranged to lift the paper-guides from the path of the sheet of paperimmediately before the moment when the sheet of papernow in the grasp ofthe nippers of the cylinder B, (not shown in the drawings)-com mences tobe carried toward the forms for obtaining the impression by saidcylinder.

K 7c designate abelt-shipper of a common and well-known form, the sameconsisting of a lever fulcrulned to the side of the pressframe andjointed to a sliding rod K, iitted to slide through openings forlned inthe bedpiece of said frame. The opposite end of said sliding rod isjointed to a hand-lever 58 fulcrumed to a bracket 59 attached to saidframe. Said leveris provided for the purpose of moveing saidbelt-shipper in one direction against the resistance of a compressiblespring 57, interposed between a collar on the sliding rod K and anadjacent part of said bed-piece. By means of said lever the belt-shipperis moved to carry the driving-belt of the machine onto a tight pulley105, whereon said belt is retained by reason of the sliding rod K beingheld in a fixed position by a detent 61, which is formed on the lowerend of a vertical sliding rod 60 for the purpose of engaging with thecorresponding end of the sliding rod K. The sliding bar 60 is forceddownwardly by a spring 62 to carry the detent 61 into position to engagewith the sliding rod K, but when the latter is released from the hold ofsaid detent the spring 57 will force said rod to move in a directionthat will cause said belt-shipper to carry the driving-belt onto a loosepulley 104, and thereby the operation of the printingpress will beterminated temporarily. The sliding rod 60 is provided with an arm 63,having at its inner end a looselypivoted droppiece 64, provided with anarmature 65, which coacts with an electromagnet 66 for the purpose ofdrawing said drop-piece into the position shown in Fig. 15, which showsthe position maintained by said d ro p-piecc while the printing-press isperforming its operations. A vertically-reciprocating rod 67, Iitted toslide in a guide 68 on the frame A, is provided with a friction-roller 69, which bears upon a cam 70, secured to the cam-shaft C, the lower endof IOO IIO

said rod being bifurcated to span said shaft. IVhen the electricalcircuit through the electromagnet is broken to release the drop-piece(Si, the latter will drop into the position shown in full lines in Fig.3, and thereby the rod G7 on its next upward stroke will engage with thelower end of said drop-piece and effect an upward movement of the rod(50 that will dislodge the detent G1 from its engagement with thesliding rod K. IVhen this is accom plished, the spring 57 will forciblymove said sliding rod in such manner as to cause the belt-shipper K 7oto shift the drivingbelt onto the loose pulley 101 of the printing-pressand cause the latter to terminate its operations. The valve 3S, attachedto the pipe I, is connected to the free end of a lever 71, which ispressed upwardly by a spring 72 for the purpose of holding said valvenormally in a position where it is slightly raised from its seat. Anelectromagnet 73 is arranged in respect to the lever 71 in such mannerthat when said magnet is electrically excited it will draw said leverdownward to effect the closing movement of the valve SS.

L designates a side guide for the sheets of paper. Said guide isadjustably attached to the table J, and is located adjacent to the pipeI, its purpose being to govern the lateral position of the sheets ofpaper passing through the feeding mechanism. Said side guide consistsoi' a head 7i, of wood or other material that is a non-conductor ofelectricity, to which a delicate spring 7 5, of metal possessed ofconductive power forelectricity, is pendently attached. A contaet-point7 6 is iixed in the face of said head, so that the spring 7 5 will comein contact therewith when said spring is deflected, as shown in Fig. 7,and a stop 77 prevents said spring from springing too far from the faceet' said head.

For the purpose of simplifying the descrip tion of the electricalcircuits for my feeding mechanism I have shown four generators ofelectricity, which are designated as M, N, O, and I); but it should beunderstood that a single generator is sufficient for the purposes of myapparatus.

In the drawings the generator M supplies the electricity for the circuitthat operates the friction-clutch 7 on one side of my apparatus, thecurrent from said generator through a eomlucting-wire 7S, thence throughthe strip 17, contact-arm 3l, conducting-wire 79, and brush S0 into theelectromagnets of' said friction-clutch. Frein said electromagnets thecurrent passes through the brush Sl and con ducting-wire S2 back to thegenerator M, thereby completing the electric circuit. Said circuitbecomes automatically broken when a sheet of paper passes between theend of the contact-ar1n 3l and the strip 47, and by the breaking of saidcircuit. the friction-clutch 7 on the corresponding side of theapparatus is retracted from the gearewheel G on said side, andsimultaneously therewith the gear-wheel 12 is automatically clutched tothe shaft 9 to drive the tapes 17 at a reduced rate of travel. The tapes1S may coincidently be traveling at their maximum rate of speed to carrythe sheet of paper squarely toward the cylinder B.

The current of electricity from the generator N operates thefriction-cluteh 7 at the opposite side ol the apparatus, in the manner just described, by passing through a conductingm'ire S3, strip 47 on thesame side of the apparatus, corresponding contact'arm Steenducting-wireSi, and brush 85 into the electromagnets of the last-namedfriction-clutch. Frein said eleetromagnets the current passes throughthe brush 8G and conducting-wire S7 back to the generator N. Thebreaking of the circuit through the last-named generator is effected bya sheet of paper in the manner just described in respect to the currentfrom the generator M, and the manner of clutching the gear-wheel 13 tothe shaft 10 is precisely the same as described for clutching thegearwheel 12 to the shaft 9, and thereby the tapes 1S have their speedreduced in the manner described in respect to the tapes 17, and with thesame results upon a sheet of paper resting thereon.

The generator() supplies the electricity for the circuit which isconnected with the paperguides for the end of the sheet for the purposeof effecting the closing of the valve 38 when a vacuum is required inthe pipe I, and it should be understood that this circuit remainsnormally in an open condition. Frein the generator O the current passesthrough a eonducting-wire 88 to the spring 50 which is farthest fromsaid generator. From the contact-point 51 for said spring aconductingwire S9 conveys the current, when the circuit is closed bydeilecting said spring against said contact-point, to the spring 50 thatis nearest the generator O, and from the contact-point 51 for thelast-named spring a conductingwire 90 conveys the current to one pole ota movable armature 91, and from the opposite .pole of said armature aconducting-wire 92 connects with one side of the electromagnet 7 3 forclosing the valve 38, and from the opposite side of said electromagnet aconducting-wire 93 conveys the current back to the generator O, therebycompleting that circuit. 'lo the conducting-wire 90 a branchconducting-wire 94 is connected to the eontact-point 7 G, attached tothe side guide L and to the spring ot' said side guide. A conductingwire95 is connected to convey the current to the electromagnet (SG by whichtl ie drop-piece (il is drawn back to prevent the reciprocating rod (57from releasing the sliding rod K to move the belt-shipper attachedthereto. From the electromagnet U6 a conducting-wire 96 is connected tothe conducting-wire 93, which connects with the generator O, and therebythis auxiliary circuit is completed.

The generator Pis an adjunctive one for producing an electrical circuitthat will cut out the circuit which passes through the armature 91,whereby the valve 38 will be re- IOO leased from the control of themagnet 73 so as to be opened by the spring 7 2, and the vacuum in thepipe I will be destroyed to free the sheet of paper from said pipe. Toeffect that purpose a conducting-wire 97 is connected to thecontact-point 7 6 from one pole of the generator P. The opposite pole ofsaid generator is connected to one side of the electromagnets 98 by aconducting-wire 99, and the opposite side of said electromagnets isconnected by a conducting-wire 100 to the wire 95 so as to complete thecircuit through said generator to magnetize the electromagnets 98. Whenthe magnetization of the electromagnets 98 is effected the armature 91will be instantly attracted to said magnets, and the current whichpasses through said armature from the wire 90 to the wire 92 is broken,and the current from the generator O will continue to pass, through thewires 94 and 95, electromagnet 66, and wires 96 and 98, back to saidgenerator. The armature 91 is normally held by a spring 101 against apair of contactpoints 102, which, being insulated in a bracket 103 forthe electromagnet 98, form the terminals for the wires 90 and 92.

As hereinbefore set forth, the printingpress partially illustrated inthe drawings is one of a class commonly known as a stopcylinder, butsaid press forms no part of my invention, which can be readily appliedto any form of printing-press in which a cylinder is employed forcarrying sheets to receive impressions from forms carried on apress-bed.

As shown in Figs. 14 and 15, 106 designates the driving-shaft of thepress, to which the tight pulley 105 is secured and the loose pulley 104is tted to rotate thereon without imparting motion thereto. A pinion 107is also secured to said shaft and is fitted to mesh into aspur-wheel108, secured to a shaft 109, which carries a crank 110 on itsinner end. The driving-shaft 106 is provided with a worm 111, whichmeshes into a worm-wheel 112, secured to the cam-shaft C for the purposeof imparting a rotary motion to said cam-shaft. A connecting-rod Qengages on the wrist-pin of the crank 110 and to a center shaft113,which is journaled in a hanger 114, secured to the lower face of thepress-bed R. Said center shaft has a gear-Wheel 115 secured to it, andone end of the connecting-rod Q is bifurcated to span said gear-wheeland form a jointed connection to the center shaft. The gearwheel 115 istted to mesh into a stationary rack 116, secured to the base of thepress, and said gear-Wheel also meshes into a rack 117, secured to thelower face of the press-bed R. By means of the crank 110 andconnectingrod Q a rotary motion is imparted to the gear- Wheel 115 byimpelling said wheel on the rack 116, and thereby a reciprocating move-.ment is imparted to the press-bed R, which movement will be twice thelinear travel of .the gear-wheel 115 in the rack 116.

The upper face of the press-bed R is pro-` vided with a rack 118 at oneof its edges. Said rack is shorter than the movement of the press-bed,so as to leave a blank space, as at 119, and it is adapted to take in agearwheel 120 on the cylinder B. W'hi le the rack 118 is engaged in saidgear-wheel a rotary motion will thereby be imparted to the cylinder B;but when the blank space 119 is brought into position directly beneathsaid gear-wheel the engagement of the gear-wheel 120 with the rack 118will terminate. A double cam S, preferably composed of plates 121 and122, is secured to the shaft 109, and the outer edges of said plates areprovided with successive projections and depressions, which are adaptedto eect the required endwise movements of a connecting-link 123, fittedto span the shaft 109 between the plates 121 and 122. A friction-roller124 is pivoted on said link and arranged to bear upon the periphery ofthe plate 121, for the purpose of moving the link in a direction towardthat end of the press where the driving-shaft 106 is located, and a likeroller 125 is also pivoted to said link and arranged to bear upon theperiphery of the plate 122, for the purpose of moving said link in theopposite direction, and it should be understood that the projections oneither of said plates have corresponding depressions on the other one,so that the rollers 124 and 125 will have a fair bearing on theperiphery of the plates to which they are respectively assigned. One endof the link 123 is jointed, as at 126, to the swinging end of arockerarm 127, fitted to vibrate in a vertical plane longitudinally ofthe press-frame, and the upper end of said rocker-arm is provided with ajaw 128, that is fitted to engage with a tooth 129, attached to one endof the cylinder B, and the engagement of said jaw and tooth ispractically simultaneous with the disengagement of the rack 1-18 fromthe gear-wheel120, said rocker-arm being arranged to move the cylinder Binto position (shown in Fig. 14) before the cylinder is brought to astate of rest. The cylinder B will then remain stationary while theperipheries of the plates 121 and 122 have the parts which areconcentric to the shaft 109 in contact with the rollers 124 and 125, andit is during this stationary condition of the cylinder B that a sheetfed by my feeding mechanism reaches the nipping-fingers of said cylinderin condition to be engaged on the latter and carried in to receive animpression of a form fixed on the press-bed R. As shown in Fig. 14, thecylinder B is at its stationary position and the roller 124 is juststarted on a projection of the plate 121, whereby an impulse will begiven to the rocker-arm 127 to start the cylinder B, by means of the jaw128 and tooth 129, so that the teeth of the rack 118 will mesh into theteeth of the gear-wheel 120. When the latter is accomplished the jaw 128will be disengaged from the tooth 129, and, by means of the rack 118,the cylinder B will have a complete revolution imparted to it and willIOO IIO

return to its state of rest, as hereinbefore dcscribed.

By reference to Fig. 14 it will be seen'that the gear-wheel 120 has aportion of its periphery unprovidcd with teeth, so as to leave a blankspace 130, which corresponds in position with the tooth 129, wherebyclearance is obtained to allow the teeth of the rack 11S to pass undersaid gear-wheel while the pressbed R is making its reciprocation towardthe opposite end of the press from the one where the cylinder islocated. From the foregoing description of said stop-cylinder press itwill be seen that the cylinder B is revolved while the press-bed R isbeing moved toward the end of the press at which the driving-shaft 106is located, and said cylinder remains stationary while the press-bed isbeing moved in the opposite direction.

My invention operates in the following manner: rlhe motion of the pressbeing stopped, a sheet of paper is laid on the tapes of the feedingmechanism and is arranged to bear against the guides 50 and L, and thepress is then started by shifting the drivin g-belt from the loose tothe tight pulley by means of the lever 58. If the rod GO is at this timeheld in its raised position by the cam 70, said lever must be held untilthe cam has been moved to release the rod 60, and the latter then fallsand its detent (5l will engage the sliding rod K, and thereby thebelt-shipper K 7s will be held in position to retain the drivin g-belton the tight pulley 105 and keep the press in motion. The sheets ofpaper are then i'ed to the apparatus by inserting them, a sheet at atime, between the feeding-drums F and the disks 2G, and said insertionmay be effected either by hand or automatically by mechanical means.Said feeding-drums deliver the sheets upon the upper stretch of theendless tapes l? and 1S while the latter are being moved at theirmaximum speed, and preferably caeh sheet should be delivered upon saidtapes in such manner that an equal portion will rest upon the two seriesof said tapes, and by the latter the sheet is fed to the table J andunder the feeding-tapes 2S, by which it is passed between thecontact-arms 3i and metallic strips i7, thereby breaking the electricalcircuits that control the frictionclutches 7 at the opposite sides ofthe apparatus. lf a sheet of paper has its advancing edge presented inan angular direction in respect to said contact-arms, so that one ofsaid circuits will be broken before the other is affected, the tapes onthe side of the unbroken circuit will continue to move at their maximumspeed and the tapes of the other series will move ata reduced speed, andthereby the sheet will be brought into its correct positionautomatically. Then the leading edge of sheet of paper strikes both ofthe springs 50 to defiect said springs against their correspondingcontact -points 5l, the circuit through the wires 90 and 93 will beclosed to excite the electromagnet 7 3, whereby the Valve 38 will beclosed and the sheet of paper, adhering to the pipe I, will be carriedlaterally against the spring of the side guide L and, by the deflectionof said spring against the contact-point 7 G, the circuit through theelectromagnets 9S will be closed to break the circuit through theelectromagnet 73 so as to release the valve 38 from the control of saidmagnet. Then this is accomplished the sheet of paper is free and inposition. for being grasped by the nippers of the cylinder B.

In the operation of lny feeding mechanism, in case a sheet does notreach all of the guides shortly before the grippers of thepress-cylinder close upon the sheet, the droppiece G4 will not be drawnback by the magnet Gli, the circuit through said magnet will remainopen, and the rod G7, moved by the cam 70, will engage with the pendentdroppiece and effect the disengagement of the detent (il from thesliding rod K, and by the operation of the belt-shipper K k, therebyrcleased, the motion of the press will be automatically stopped.

When it is desirable to stop the printingpress independently of theelectrically-controlled mechanism, the rod G() can be raised by hand torelease the belt-shipper K k from the control of the detent Gl. Thensaid beltshippcr will operate in the manner hcreinbefore described. Thedriving-belt can be shifted to the fast pulley to start theprinting-press at any moment without turning said press by hand in theord inary manncrof starting printing-presses.

\Vhile l have shown myfeedin mechanism applied to a stop-cylinderprinting-press, it should be understood that itis adapted to use on anyform of printing-press which prints separate sheets of paper.

lVha-t I claim as my invention, and desire to secure by Letters Patent,is-

l. In a paper-feeding mechanism, the combination of two independentseries or sets of feeding-tapes; each set having an independent drivingmechanism for producing differential speeds and sov arranged that oneset of said tapes may be moved at its maximum while the other set ismoving at its minimum speed, clutch mechanism for temporarily fasteningthe gearing of said driving mechanisms to their respective shafts, andelectrical circuits connected to said clutch mechanisms in such mannerthat either train of gearing-for effecting the maximum speed of thefeedingtapes-may be thrown out of action; each of said electricalcircuits being provided with contact-points that are automaticallyseparable by means of a sheet of paper, substantiallyas and for thepurpose herein specified.

2. In a paper-feeding mechanism, the com.- bination of an electricalcircuit, a guide or guides for the foremost end of the sheets of paperconnected with said circuit and provided with means for automaticallyclosing the circuit, a lateral feeding mechanism provided withmeans-controlled by said elec- IIO trical circuit-for temporarilyattaching the sheets of paper thereto, a side guide electricallyconnected to said circuit and provided with means for automaticallyclosing the circuit by the contact of a sheet of papertherewith, and astop-motion controlled by said circuit; whereby the stoppage of thepress will be effected automatically, substantially as and for thepurpose herein specified.

3. In a paper-feeding mechanism, the combination of a belt-shipper, aspring-actuated rod provided with a detent for retaining saidbelt-shipper at one extremity of its movement; said rod being providedwith an arm having a drop-piece loosely pivoted thereto, avertically-reciprocating rod fitted to take against the lower end ofsaid drop-piece when the latter is in a vertically-pendent position, anelectromagnet adjacently located to said drop-piece and arranged todeflect the latter from the path of said reciprocating rod, and anelectrical circuit connected with said magnet; said circuit beingautomatically closed bythe side guide of the paper-feeding mechanism,substantially as specified.

4. In a paper-feeding mechanism, the combination of one or more guidesfor the foremost end of the sheets of paper; said guides being fitted toautomatically close an open electrical circuit which connects saidguides with an electromagnet for closing the valve of a vacuum-pipe saidvacuum-pipe being perforated and fitted to reciprocate endwise laterallyof the paper-feeding mechanism, a side guide for the sheets of paperlocated adjacent to said vacuum-pipe, and a branch electrical circuitfrom the first-named circuit and arranged to demagnetize theelectromagnet which controls the closing of the valve of saidvacuum-pipe, as and for the purpose herein specified.

5. In a paper-feeding mechanism, the combination of preliminaryfeeding-tapes, a table located intermediately between said tapes and theimpression-cylinder of a press to which said feeding mechanism isapplied, and auxiliary feeding-tapes arranged to bear upon the uppersurface Aof said table and extending over said cylinder to a pointbeyond the guides for the foremost edge of the sheets of paper; wherebysaid auxiliary feeding-tapes will cooperate with said table to completethe feeding of the sheets of paper from the preliminary feeding-tapes tothe impression-cylinder, and the curling up of said sheets-by contactwith said guides-will be prevented by said tapes, substantially asspecied.

6. In a paper-feeding mechanism, the combination with one or moreelectrical circuits, a sheet-feeding mechanism consisting of twoindependentlyoperating series of feedingtapes; the driving mechanism ofeach series of tapes being provided with an electricallycontrolledfriction-clutch, and means-substantially as described-for breaking theelectrical circuit to either of said clutches, of a lateral feedingmechanism consisting of a perforated vacuum-pipe tted to reciprocate inatransverse direction in respect to the line of movement of saidfeeding-tapes; said vacuum-pipe being provided with anelectricallycontrolled valve-wh ereby the vacuum can be destroyed, andmeans-substantially as described-for eifecting the opening and closingmovements of said valve, as and for the purpose herein specified.

. '7. In a paper-feeding mechanism, the combination of an electricalcircuit, two independently-operating series of feeding-tapes for feedingthe paper toward the impressioncylinder 'of a printing-press; thedriving mechanism of each series of said tapes being provided with anelectrically-controlled friction-clutch as herein set forth, a tableprovided with two independent contact-plates which are separatelyelectrically connected with one pole of said circuit, and a pair ofloosely-pivoted contact-arms which are electrically connected with theother pole of said circuit and arranged to normally remain in electricalcontact with the corresponding contact-plate of said tablesaid contactbeing broken by passing a sheet of paper between either of said arms andits corresponding contact-plate; whereby either of the series offeeding-tapes can be automatically retarded `to bring a sh eet of paperinto perfect register before its deliveryto the impression-cylind er, asand for the purpose specified.

FRANK VAN BENTIIUYSEN.

Witnesses WM. I-I. Low, JNO. H. SILsBY.

